GPS Measurement of Philippine Sea Plate Motion in the Nansei-Shotou Region

南西-鸟岛地区菲律宾海板块运动的 GPS 测量

• 批准号: 01460050
• 负责人: HIRAHARA Kazuro
• 金额: $ 4.1万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1989
• 资助国家: 日本
• 起止时间: 1989 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01460050/
• 关键词: GPS; Plate Motion; Philippine Sea Plate; Eurasian Plate; 南西諸島; GSP

The Philippine Sea plate is subducting beneath the Eurasian plate along the Ryukyu trench in the Nansei-shotou region, southwest Japan. We have so far carried out three times GPS campaign at three island stations in the Nansei-shotou GPS network extending across the Ryukyu trench. Analyzing GPS data observed with dual frequency GPS receivers WM102, we detected the relative motion of these two plates. From the change of 3 baseline lengths during about 2 years from January 1990 to November 1991, the Philippine Sea plate is estimated to move toward the Eurasian plate with a convergence rate of 8.7 <plus-minus> 3.1 cm/yr and a direction of N70ﾟ <plus-minus> 30This study shows that GPS observations can directly detect plate motions. Further, we need to construct a fixed GPS network and perform daily or weekly GPS observations for detecting the details of plate motion, that is, iregular or stationary motion.

菲律宾海板块正沿着琉球海沟俯冲到欧亚板块之下。到目前为止，我们已经在横跨琉球海沟的南西-松岛GPS网络的三个岛屿站进行了三次GPS活动。通过对WM 102双频GPS接收机观测数据的分析，我们探测到了这两个板块的相对运动。从1990年1月至1991年11月的2年间3条基线长度的变化，估计菲律宾海板块以8.7 ~ 3.1cm/年的速度向欧亚板块靠拢<plus-minus>，方向为N70 ~ 30 °<plus-minus>。此外，我们需要建立一个固定的GPS网络，每天或每周进行GPS观测，以检测板块运动的细节，即不规则或静止运动。

项目成果

大見 士朗: "別府島原地溝滞におけるGPS観測" GPS研究会(GPSシンポジウム1991). 135-141 (1991)

Shiro Omi：“别府岛原地堑的 GPS 观测”GPS 研究小组（GPS 研讨会 1991）135-141（1991）。

Tanaka,T.: "Daily routine GPS observation with MIN-MAC2816 in kinki and Shikoku region,southwest Japan" Proceedings of Sixth International Geodetic Symposium on Satellite Positioning. (1992)

Tanaka,T.：“日本西南部近畿和四国地区使用 MIN-MAC2816 进行日常 GPS 观测”第六届国际卫星定位大地测量研讨会论文集。

Hirahara, K.: "Preliminary analysis of GPS JAPAN'90 data obtained at the Nansei-shotou GPS network" Proceedings of Japan. Symp on GPS (1991). 246-250 (1991)

Hirahara, K.：“在 Nansei-shotou GPS 网络获得的 GPS JAPAN90 数据的初步分析”日本会议记录。

Tanaka, T.: "Preliminary results from an observation of water vapor in the troposphere with two microwave radiometers at Uji" Proceedings of Japan. Symp. on Earth Rotation, Astronomy and Geodesy. (1992)

田中，T.：“用宇治的两个微波辐射计观测对流层水蒸气的初步结果”日本会议录。

Hirahara,K.: "Preliminary analysis of GPS JAPAN'90 data obtained at the Nansei-shotou GPS network" Proceedings of the Japanese Symposium on GPS(1991). 246-250 (1991)

Hirahara,K.：“在 Nansei-shotou GPS 网络上获得的 GPS JAPAN90 数据的初步分析”日本 GPS 研讨会论文集（1991 年）。